Growth and characterisation of L-arginine phosphate family crystals

摘要

In order to improve the device characteristics of L-arginine phosphate (LAP) family of crystals, metals doping with oxides of copper and magnesium were examined. Mg-doped crystals enhance the growth along the c-axis; X-ray powder diffraction patterns were used to calucloate the lattice parameters of the cystals. Fourier transorm infra red (FTIR) spectroscopy and thermal anlaysis (DTA, TGA) were performed to study the molecualr vibrations and thermal behaviour of the crystals, respectively. Mechanical characterisation such as micro-hardness studies on (1 0 0) and (0 1 0) planes were also carried out. The weight percentageof the doped copper and magnesium were caluclated by atomic absorption spectroscopy (AAS).